/*!
 * Pikaday
 *
 * Copyright © 2014 David Bushell | BSD & MIT license | https://github.com/dbushell/Pikaday
 */

(function (root, factory)
{
    'use strict';

    var moment;
    if (typeof exports === 'object') {
        // CommonJS module
        // Load moment.js as an optional dependency
        try { moment = require('moment'); } catch (e) {}
        module.exports = factory(moment);
    } else if (typeof define === 'function' && define.amd) {
        // AMD. Register as an anonymous module.
        define(function (req)
        {
            // Load moment.js as an optional dependency
            var id = 'moment';
            moment = req.defined && req.defined(id) ? req(id) : undefined;
            return factory(moment);
        });
    } else {
        root.Pikaday = factory(root.moment);
    }
}(this, function (moment)
{
    'use strict';

    /**
     * feature detection and helper functions
     */
    var hasMoment = typeof moment === 'function',

        hasEventListeners = !!window.addEventListener,

        document = window.document,

        sto = window.setTimeout,

        addEvent = function(el, e, callback, capture)
        {
            if (hasEventListeners) {
                el.addEventListener(e, callback, !!capture);
            } else {
                el.attachEvent('on' + e, callback);
            }
        },

        removeEvent = function(el, e, callback, capture)
        {
            if (hasEventListeners) {
                el.removeEventListener(e, callback, !!capture);
            } else {
                el.detachEvent('on' + e, callback);
            }
        },

        fireEvent = function(el, eventName, data)
        {
            var ev;

            if (document.createEvent) {
                ev = document.createEvent('HTMLEvents');
                ev.initEvent(eventName, true, false);
                ev = extend(ev, data);
                el.dispatchEvent(ev);
            } else if (document.createEventObject) {
                ev = document.createEventObject();
                ev = extend(ev, data);
                el.fireEvent('on' + eventName, ev);
            }
        },

        trim = function(str)
        {
            return str.trim ? str.trim() : str.replace(/^\s+|\s+$/g,'');
        },

        hasClass = function(el, cn)
        {
            return (' ' + el.className + ' ').indexOf(' ' + cn + ' ') !== -1;
        },

        addClass = function(el, cn)
        {
            if (!hasClass(el, cn)) {
                el.className = (el.className === '') ? cn : el.className + ' ' + cn;
            }
        },

        removeClass = function(el, cn)
        {
            el.className = trim((' ' + el.className + ' ').replace(' ' + cn + ' ', ' '));
        },

        isArray = function(obj)
        {
            return (/Array/).test(Object.prototype.toString.call(obj));
        },

        isDate = function(obj)
        {
            return (/Date/).test(Object.prototype.toString.call(obj)) && !isNaN(obj.getTime());
        },

        isLeapYear = function(year)
        {
            // solution by Matti Virkkunen: http://stackoverflow.com/a/4881951
            return year % 4 === 0 && year % 100 !== 0 || year % 400 === 0;
        },

        getDaysInMonth = function(year, month)
        {
            return [31, isLeapYear(year) ? 29 : 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31][month];
        },

        setToStartOfDay = function(date)
        {
            if (isDate(date)) date.setHours(0,0,0,0);
        },

        compareDates = function(a,b)
        {
            // weak date comparison (use setToStartOfDay(date) to ensure correct result)
            return a.getTime() === b.getTime();
        },

        extend = function(to, from, overwrite)
        {
            var prop, hasProp;
            for (prop in from) {
                hasProp = to[prop] !== undefined;
                if (hasProp && typeof from[prop] === 'object' && from[prop].nodeName === undefined) {
                    if (isDate(from[prop])) {
                        if (overwrite) {
                            to[prop] = new Date(from[prop].getTime());
                        }
                    }
                    else if (isArray(from[prop])) {
                        if (overwrite) {
                            to[prop] = from[prop].slice(0);
                        }
                    } else {
                        to[prop] = extend({}, from[prop], overwrite);
                    }
                } else if (overwrite || !hasProp) {
                    to[prop] = from[prop];
                }
            }
            return to;
        },

        adjustCalendar = function(calendar) {
            if (calendar.month < 0) {
                calendar.year -= Math.ceil(Math.abs(calendar.month)/12);
                calendar.month += 12;
            }
            if (calendar.month > 11) {
                calendar.year += Math.floor(Math.abs(calendar.month)/12);
                calendar.month -= 12;
            }
            return calendar;
        },

        /**
         * defaults and localisation
         */
            defaults = {

            // bind the picker to a form field
            field: null,

            // automatically show/hide the picker on `field` focus (default `true` if `field` is set)
            bound: undefined,

            // position of the datepicker, relative to the field (default to bottom & left)
            // ('bottom' & 'left' keywords are not used, 'top' & 'right' are modifier on the bottom/left position)
            position: 'bottom left',

            // the default output format for `.toString()` and `field` value
            format: 'YYYY-MM-DD',

            // the initial date to view when first opened
            defaultDate: null,

            // make the `defaultDate` the initial selected value
            setDefaultDate: false,

            // first day of week (0: Sunday, 1: Monday etc)
            firstDay: 0,

            // the minimum/earliest date that can be selected
            minDate: null,
            // the maximum/latest date that can be selected
            maxDate: null,

            // number of years either side, or array of upper/lower range
            yearRange: 10,

            // show week numbers at head of row
            showWeekNumber: false,

            // used internally (don't config outside)
            minYear: 0,
            maxYear: 9999,
            minMonth: undefined,
            maxMonth: undefined,

            isRTL: false,

            // Additional text to append to the year in the calendar title
            yearSuffix: '',

            // Render the month after year in the calendar title
            showMonthAfterYear: false,

            // how many months are visible
            numberOfMonths: 1,

            // when numberOfMonths is used, this will help you to choose where the main calendar will be (default `left`, can be set to `right`)
            // only used for the first display or when a selected date is not visible
            mainCalendar: 'left',

            // Specify a DOM element to render the calendar in
            container: undefined,

            // internationalization
            i18n: {
                previousMonth : 'Previous Month',
                nextMonth : 'Next Month',
                months : ['January','February','March','April','May','June','July','August','September','October','November','December'],
                weekdays : ['Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday'],
                weekdaysShort : ['Sun','Mon','Tue','Wed','Thu','Fri','Sat']
            },

            // callback function
            onSelect: null,
            onOpen: null,
            onClose: null,
            onDraw: null
        },


        /**
         * templating functions to abstract HTML rendering
         */
            renderDayName = function(opts, day, abbr)
        {
            day += opts.firstDay;
            while (day >= 7) {
                day -= 7;
            }
            return abbr ? opts.i18n.weekdaysShort[day] : opts.i18n.weekdays[day];
        },

        renderDay = function(d, m, y, isSelected, isToday, isDisabled, isEmpty)
        {
            if (isEmpty) {
                return '<td class="is-empty"></td>';
            }
            var arr = [];
            if (isDisabled) {
                arr.push('is-disabled');
            }
            if (isToday) {
                arr.push('is-today');
            }
            if (isSelected) {
                arr.push('is-selected');
            }
            return '<td data-day="' + d + '" class="' + arr.join(' ') + '">' +
                '<button class="pika-button pika-day" type="button" ' +
                'data-pika-year="' + y + '" data-pika-month="' + m + '" data-pika-day="' + d + '">' +
                d +
                '</button>' +
                '</td>';
        },

        renderWeek = function (d, m, y) {
            // Lifted from http://javascript.about.com/library/blweekyear.htm, lightly modified.
            var onejan = new Date(y, 0, 1),
                weekNum = Math.ceil((((new Date(y, m, d) - onejan) / 86400000) + onejan.getDay()+1)/7);
            return '<td class="pika-week">' + weekNum + '</td>';
        },

        renderRow = function(days, isRTL)
        {
            return '<tr>' + (isRTL ? days.reverse() : days).join('') + '</tr>';
        },

        renderBody = function(rows)
        {
            return '<tbody>' + rows.join('') + '</tbody>';
        },

        renderHead = function(opts)
        {
            var i, arr = [];
            if (opts.showWeekNumber) {
                arr.push('<th></th>');
            }
            for (i = 0; i < 7; i++) {
                arr.push('<th scope="col"><abbr title="' + renderDayName(opts, i) + '">' + renderDayName(opts, i, true) + '</abbr></th>');
            }
            return '<thead>' + (opts.isRTL ? arr.reverse() : arr).join('') + '</thead>';
        },

        renderTitle = function(instance, c, year, month, refYear)
        {
            var i, j, arr,
                opts = instance._o,
                isMinYear = year === opts.minYear,
                isMaxYear = year === opts.maxYear,
                html = '<div class="pika-title">',
                monthHtml,
                yearHtml,
                prev = true,
                next = true;

            for (arr = [], i = 0; i < 12; i++) {
                arr.push('<option value="' + (year === refYear ? i - c : 12 + i - c) + '"' +
                    (i === month ? ' selected': '') +
                    ((isMinYear && i < opts.minMonth) || (isMaxYear && i > opts.maxMonth) ? 'disabled' : '') + '>' +
                    opts.i18n.months[i] + '</option>');
            }
            monthHtml = '<div class="pika-label">' + opts.i18n.months[month] + '<select class="pika-select pika-select-month">' + arr.join('') + '</select></div>';

            if (isArray(opts.yearRange)) {
                i = opts.yearRange[0];
                j = opts.yearRange[1] + 1;
            } else {
                i = year - opts.yearRange;
                j = 1 + year + opts.yearRange;
            }

            for (arr = []; i < j && i <= opts.maxYear; i++) {
                if (i >= opts.minYear) {
                    arr.push('<option value="' + i + '"' + (i === year ? ' selected': '') + '>' + (i) + '</option>');
                }
            }
            yearHtml = '<div class="pika-label">' + year + opts.yearSuffix + '<select class="pika-select pika-select-year">' + arr.join('') + '</select></div>';

            if (opts.showMonthAfterYear) {
                html += yearHtml + monthHtml;
            } else {
                html += monthHtml + yearHtml;
            }

            if (isMinYear && (month === 0 || opts.minMonth >= month)) {
                prev = false;
            }

            if (isMaxYear && (month === 11 || opts.maxMonth <= month)) {
                next = false;
            }

            if (c === 0) {
                html += '<button class="pika-prev' + (prev ? '' : ' is-disabled') + '" type="button">' + opts.i18n.previousMonth + '</button>';
            }
            if (c === (instance._o.numberOfMonths - 1) ) {
                html += '<button class="pika-next' + (next ? '' : ' is-disabled') + '" type="button">' + opts.i18n.nextMonth + '</button>';
            }

            return html += '</div>';
        },

        renderTable = function(opts, data)
        {
            return '<table cellpadding="0" cellspacing="0" class="pika-table">' + renderHead(opts) + renderBody(data) + '</table>';
        },


        /**
         * Pikaday constructor
         */
            Pikaday = function(options)
        {
            var self = this,
                opts = self.config(options);

            self._onMouseDown = function(e)
            {
                if (!self._v) {
                    return;
                }
                e = e || window.event;
                var target = e.target || e.srcElement;
                if (!target) {
                    return;
                }

                if (!hasClass(target, 'is-disabled')) {
                    if (hasClass(target, 'pika-button') && !hasClass(target, 'is-empty')) {
                        self.setDate(new Date(target.getAttribute('data-pika-year'), target.getAttribute('data-pika-month'), target.getAttribute('data-pika-day')));
                        if (opts.bound) {
                            sto(function() {
                                self.hide();
                                if (opts.field) {
                                    opts.field.blur();
                                }
                            }, 100);
                        }
                        return;
                    }
                    else if (hasClass(target, 'pika-prev')) {
                        self.prevMonth();
                    }
                    else if (hasClass(target, 'pika-next')) {
                        self.nextMonth();
                    }
                }
                if (!hasClass(target, 'pika-select')) {
                    if (e.preventDefault) {
                        e.preventDefault();
                    } else {
                        e.returnValue = false;
                        return false;
                    }
                } else {
                    self._c = true;
                }
            };

            self._onChange = function(e)
            {
                e = e || window.event;
                var target = e.target || e.srcElement;
                if (!target) {
                    return;
                }
                if (hasClass(target, 'pika-select-month')) {
                    self.gotoMonth(target.value);
                }
                else if (hasClass(target, 'pika-select-year')) {
                    self.gotoYear(target.value);
                }
            };

            self._onInputChange = function(e)
            {
                var date;

                if (e.firedBy === self) {
                    return;
                }
                if (hasMoment) {
                    date = moment(opts.field.value, opts.format);
                    date = (date && date.isValid()) ? date.toDate() : null;
                }
                else {
                    date = new Date(Date.parse(opts.field.value));
                }
                self.setDate(isDate(date) ? date : null);
                if (!self._v) {
                    self.show();
                }
            };

            self._onInputFocus = function()
            {
                self.show();
            };

            self._onInputClick = function()
            {
                self.show();
            };

            self._onInputBlur = function()
            {
                if (!self._c) {
                    self._b = sto(function() {
                        self.hide();
                    }, 50);
                }
                self._c = false;
            };

            self._onClick = function(e)
            {
                e = e || window.event;
                var target = e.target || e.srcElement,
                    pEl = target;
                if (!target) {
                    return;
                }
                if (!hasEventListeners && hasClass(target, 'pika-select')) {
                    if (!target.onchange) {
                        target.setAttribute('onchange', 'return;');
                        addEvent(target, 'change', self._onChange);
                    }
                }
                do {
                    if (hasClass(pEl, 'pika-single')) {
                        return;
                    }
                }
                while ((pEl = pEl.parentNode));
                if (self._v && target !== opts.trigger) {
                    self.hide();
                }
            };

            self.el = document.createElement('div');
            self.el.className = 'pika-single' + (opts.isRTL ? ' is-rtl' : '');

            addEvent(self.el, 'mousedown', self._onMouseDown, true);
            addEvent(self.el, 'change', self._onChange);

            if (opts.field) {
                if (opts.container) {
                    opts.container.appendChild(self.el);
                } else if (opts.bound) {
                    document.body.appendChild(self.el);
                } else {
                    opts.field.parentNode.insertBefore(self.el, opts.field.nextSibling);
                }
                addEvent(opts.field, 'change', self._onInputChange);

                if (!opts.defaultDate) {
                    if (hasMoment && opts.field.value) {
                        opts.defaultDate = moment(opts.field.value, opts.format).toDate();
                    } else {
                        opts.defaultDate = new Date(Date.parse(opts.field.value));
                    }
                    opts.setDefaultDate = true;
                }
            }

            var defDate = opts.defaultDate;

            if (isDate(defDate)) {
                if (opts.setDefaultDate) {
                    self.setDate(defDate, true);
                } else {
                    self.gotoDate(defDate);
                }
            } else {
                self.gotoDate(new Date());
            }

            if (opts.bound) {
                this.hide();
                self.el.className += ' is-bound';
                addEvent(opts.trigger, 'click', self._onInputClick);
                addEvent(opts.trigger, 'focus', self._onInputFocus);
                addEvent(opts.trigger, 'blur', self._onInputBlur);
            } else {
                this.show();
            }
        };


    /**
     * public Pikaday API
     */
    Pikaday.prototype = {


        /**
         * configure functionality
         */
        config: function(options)
        {
            if (!this._o) {
                this._o = extend({}, defaults, true);
            }

            var opts = extend(this._o, options, true);

            opts.isRTL = !!opts.isRTL;

            opts.field = (opts.field && opts.field.nodeName) ? opts.field : null;

            opts.bound = !!(opts.bound !== undefined ? opts.field && opts.bound : opts.field);

            opts.trigger = (opts.trigger && opts.trigger.nodeName) ? opts.trigger : opts.field;

            var nom = parseInt(opts.numberOfMonths, 10) || 1;
            opts.numberOfMonths = nom > 4 ? 4 : nom;

            if (!isDate(opts.minDate)) {
                opts.minDate = false;
            }
            if (!isDate(opts.maxDate)) {
                opts.maxDate = false;
            }
            if ((opts.minDate && opts.maxDate) && opts.maxDate < opts.minDate) {
                opts.maxDate = opts.minDate = false;
            }
            if (opts.minDate) {
                setToStartOfDay(opts.minDate);
                opts.minYear = opts.minDate.getFullYear();
                opts.minMonth = opts.minDate.getMonth();
            }
            if (opts.maxDate) {
                setToStartOfDay(opts.maxDate);
                opts.maxYear = opts.maxDate.getFullYear();
                opts.maxMonth = opts.maxDate.getMonth();
            }

            if (isArray(opts.yearRange)) {
                var fallback = new Date().getFullYear() - 10;
                opts.yearRange[0] = parseInt(opts.yearRange[0], 10) || fallback;
                opts.yearRange[1] = parseInt(opts.yearRange[1], 10) || fallback;
            } else {
                opts.yearRange = Math.abs(parseInt(opts.yearRange, 10)) || defaults.yearRange;
                if (opts.yearRange > 100) {
                    opts.yearRange = 100;
                }
            }

            return opts;
        },

        /**
         * return a formatted string of the current selection (using Moment.js if available)
         */
        toString: function(format)
        {
            return !isDate(this._d) ? '' : hasMoment ? moment(this._d).format(format || this._o.format) : this._d.toDateString();
        },

        /**
         * return a Moment.js object of the current selection (if available)
         */
        getMoment: function()
        {
            return hasMoment ? moment(this._d) : null;
        },

        /**
         * set the current selection from a Moment.js object (if available)
         */
        setMoment: function(date, preventOnSelect)
        {
            if (hasMoment && moment.isMoment(date)) {
                this.setDate(date.toDate(), preventOnSelect);
            }
        },

        /**
         * return a Date object of the current selection
         */
        getDate: function()
        {
            return isDate(this._d) ? new Date(this._d.getTime()) : null;
        },

        /**
         * set the current selection
         */
        setDate: function(date, preventOnSelect)
        {
            if (!date) {
                this._d = null;
                return this.draw();
            }
            if (typeof date === 'string') {
                date = new Date(Date.parse(date));
            }
            if (!isDate(date)) {
                return;
            }

            var min = this._o.minDate,
                max = this._o.maxDate;

            if (isDate(min) && date < min) {
                date = min;
            } else if (isDate(max) && date > max) {
                date = max;
            }

            this._d = new Date(date.getTime());
            setToStartOfDay(this._d);
            this.gotoDate(this._d);

            if (this._o.field) {
                this._o.field.value = this.toString();
                fireEvent(this._o.field, 'change', { firedBy: this });
            }
            if (!preventOnSelect && typeof this._o.onSelect === 'function') {
                this._o.onSelect.call(this, this.getDate());
            }
        },

        /**
         * change view to a specific date
         */
        gotoDate: function(date)
        {
            var newCalendar = true;

            if (!isDate(date)) {
                return;
            }

            if (this.calendars) {
                var firstVisibleDate = new Date(this.calendars[0].year, this.calendars[0].month, 1),
                    lastVisibleDate = new Date(this.calendars[this.calendars.length-1].year, this.calendars[this.calendars.length-1].month, 1),
                    visibleDate = date.getTime();
                // get the end of the month
                lastVisibleDate.setMonth(lastVisibleDate.getMonth()+1);
                lastVisibleDate.setDate(lastVisibleDate.getDate()-1);
                newCalendar = (visibleDate < firstVisibleDate.getTime() || lastVisibleDate.getTime() < visibleDate);
            }

            if (newCalendar) {
                this.calendars = [{
                    month: date.getMonth(),
                    year: date.getFullYear()
                }];
                if (this._o.mainCalendar === 'right') {
                    this.calendars[0].month += 1 - this._o.numberOfMonths;
                }
            }

            this.adjustCalendars();
        },

        adjustCalendars: function() {
            this.calendars[0] = adjustCalendar(this.calendars[0]);
            for (var c = 1; c < this._o.numberOfMonths; c++) {
                this.calendars[c] = adjustCalendar({
                    month: this.calendars[0].month + c,
                    year: this.calendars[0].year
                });
            }
            this.draw();
        },

        gotoToday: function()
        {
            this.gotoDate(new Date());
        },

        /**
         * change view to a specific month (zero-index, e.g. 0: January)
         */
        gotoMonth: function(month)
        {
            if (!isNaN(month)) {
                this.calendars[0].month = parseInt(month, 10);
                this.adjustCalendars();
            }
        },

        nextMonth: function()
        {
            this.calendars[0].month++;
            this.adjustCalendars();
        },

        prevMonth: function()
        {
            this.calendars[0].month--;
            this.adjustCalendars();
        },

        /**
         * change view to a specific full year (e.g. "2012")
         */
        gotoYear: function(year)
        {
            if (!isNaN(year)) {
                this.calendars[0].year = parseInt(year, 10);
                this.adjustCalendars();
            }
        },

        /**
         * change the minDate
         */
        setMinDate: function(value)
        {
            this._o.minDate = value;
        },

        /**
         * change the maxDate
         */
        setMaxDate: function(value)
        {
            this._o.maxDate = value;
        },

        /**
         * refresh the HTML
         */
        draw: function(force)
        {
            if (!this._v && !force) {
                return;
            }
            var opts = this._o,
                minYear = opts.minYear,
                maxYear = opts.maxYear,
                minMonth = opts.minMonth,
                maxMonth = opts.maxMonth,
                html = '';

            if (this._y <= minYear) {
                this._y = minYear;
                if (!isNaN(minMonth) && this._m < minMonth) {
                    this._m = minMonth;
                }
            }
            if (this._y >= maxYear) {
                this._y = maxYear;
                if (!isNaN(maxMonth) && this._m > maxMonth) {
                    this._m = maxMonth;
                }
            }

            for (var c = 0; c < opts.numberOfMonths; c++) {
                html += '<div class="pika-lendar">' + renderTitle(this, c, this.calendars[c].year, this.calendars[c].month, this.calendars[0].year) + this.render(this.calendars[c].year, this.calendars[c].month) + '</div>';
            }

            this.el.innerHTML = html;

            if (opts.bound) {
                if(opts.field.type !== 'hidden') {
                    sto(function() {
                        opts.trigger.focus();
                    }, 1);
                }
            }

            if (typeof this._o.onDraw === 'function') {
                var self = this;
                sto(function() {
                    self._o.onDraw.call(self);
                }, 0);
            }
        },

        adjustPosition: function()
        {
            if (this._o.container) return;
            var field = this._o.trigger, pEl = field,
                width = this.el.offsetWidth, height = this.el.offsetHeight,
                viewportWidth = window.innerWidth || document.documentElement.clientWidth,
                viewportHeight = window.innerHeight || document.documentElement.clientHeight,
                scrollTop = window.pageYOffset || document.body.scrollTop || document.documentElement.scrollTop,
                left, top, clientRect;

            if (typeof field.getBoundingClientRect === 'function') {
                clientRect = field.getBoundingClientRect();
                left = clientRect.left + window.pageXOffset;
                top = clientRect.bottom + window.pageYOffset;
            } else {
                left = pEl.offsetLeft;
                top = pEl.offsetTop + pEl.offsetHeight;
                while((pEl = pEl.offsetParent)) {
                    left += pEl.offsetLeft;
                    top += pEl.offsetTop;
                }
            }

            // default position is bottom & left
            if (left + width > viewportWidth ||
                (
                    this._o.position.indexOf('right') > -1 &&
                        left - width + field.offsetWidth > 0
                    )
                ) {
                left = left - width + field.offsetWidth;
            }
            if (top + height > viewportHeight + scrollTop ||
                (
                    this._o.position.indexOf('top') > -1 &&
                        top - height - field.offsetHeight > 0
                    )
                ) {
                top = top - height - field.offsetHeight;
            }
            this.el.style.cssText = [
                'position: absolute',
                'left: ' + left + 'px',
                'top: ' + top + 'px'
            ].join(';');
        },

        /**
         * render HTML for a particular month
         */
        render: function(year, month)
        {
            var opts = this._o,
                now = new Date(),
                days = getDaysInMonth(year, month),
                before = new Date(year, month, 1).getDay(),
                data = [],
                row = [];
            setToStartOfDay(now);
            if (opts.firstDay > 0) {
                before -= opts.firstDay;
                if (before < 0) {
                    before += 7;
                }
            }
            var cells = days + before,
                after = cells;
            while(after > 7) {
                after -= 7;
            }
            cells += 7 - after;
            for (var i = 0, r = 0; i < cells; i++)
            {
                var day = new Date(year, month, 1 + (i - before)),
                    isDisabled = (opts.minDate && day < opts.minDate) || (opts.maxDate && day > opts.maxDate),
                    isSelected = isDate(this._d) ? compareDates(day, this._d) : false,
                    isToday = compareDates(day, now),
                    isEmpty = i < before || i >= (days + before);

                row.push(renderDay(1 + (i - before), month, year, isSelected, isToday, isDisabled, isEmpty));

                if (++r === 7) {
                    if (opts.showWeekNumber) {
                        row.unshift(renderWeek(i - before, month, year));
                    }
                    data.push(renderRow(row, opts.isRTL));
                    row = [];
                    r = 0;
                }
            }
            return renderTable(opts, data);
        },

        isVisible: function()
        {
            return this._v;
        },

        show: function()
        {
            if (!this._v) {
                removeClass(this.el, 'is-hidden');
                this._v = true;
                this.draw();
                if (this._o.bound) {
                    addEvent(document, 'click', this._onClick);
                    this.adjustPosition();
                }
                if (typeof this._o.onOpen === 'function') {
                    this._o.onOpen.call(this);
                }
            }
        },

        hide: function()
        {
            var v = this._v;
            if (v !== false) {
                if (this._o.bound) {
                    removeEvent(document, 'click', this._onClick);
                }
                this.el.style.cssText = '';
                addClass(this.el, 'is-hidden');
                this._v = false;
                if (v !== undefined && typeof this._o.onClose === 'function') {
                    this._o.onClose.call(this);
                }
            }
        },

        /**
         * GAME OVER
         */
        destroy: function()
        {
            this.hide();
            removeEvent(this.el, 'mousedown', this._onMouseDown, true);
            removeEvent(this.el, 'change', this._onChange);
            if (this._o.field) {
                removeEvent(this._o.field, 'change', this._onInputChange);
                if (this._o.bound) {
                    removeEvent(this._o.trigger, 'click', this._onInputClick);
                    removeEvent(this._o.trigger, 'focus', this._onInputFocus);
                    removeEvent(this._o.trigger, 'blur', this._onInputBlur);
                }
            }
            if (this.el.parentNode) {
                this.el.parentNode.removeChild(this.el);
            }
        }

    };

    return Pikaday;

}));